Brookhaven, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brookhaven, a borough in Delaware County, Pennsylvania.
This Afternoon
70°F
Mostly Sunny
Mostly sunny, with a high near 70. South wind around 5 mph.
7-day forecast for Brookhaven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Sunny | 5 mph S | 2% |
| Tonight | 50°F | Partly Cloudy | 5 mph S | 3% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 58°F | Mostly Cloudy | 5 mph S | 2% |
| Thursday | 74°F | Chance Light Rain | 5 to 10 mph S | 37% |
| Thursday Night | 61°F | Chance Light Rain then Chance T-storms | 5 mph S | 72% |
| Friday | 71°F | Light Rain | 0 to 5 mph SW | 78% |
| Friday Night | 55°F | Light Rain | 5 mph W | 78% |
| Saturday | 67°F | Chance Light Rain | 5 mph NW | 27% |
| Saturday Night | 46°F | Slight Chance Light Rain then Partly Cloudy | 5 mph NW | 16% |
| Sunday | 62°F | Mostly Sunny | 5 mph NW | 9% |
| Sunday Night | 44°F | Slight Chance Light Rain | 0 to 5 mph W | 23% |
| Monday | 59°F | Chance Light Rain | 5 to 10 mph NW | 33% |
| Monday Night | 43°F | Chance Light Rain | 5 to 10 mph W | 33% |
Forecast source: National Weather Service (api.weather.gov) for Brookhaven (39.871, -75.391). Updated through the day.
Growing snapshot for Brookhaven
Last spring frost
Mar 30
First fall frost
Nov 16
Growing season
230 days
Hardiness zone
7b
More local growing data for Brookhaven: nearby ZIP 19015 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Marcus Hook, Pa (3.5 mi from Brookhaven). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.